Table 2. Categories of the rTKA etiology in the study group.
†: time to revision is depicted as median (range); age at primary implant and BMI are presented as mean ± standard deviation; ROM: range of motion; BMI: body mass index; rTKA: revision total knee arthroplasty; M: male; F: female
| Reason for revision | Number of cases (%) | Time to revision (months) † | Age at primary implant (years) | BMI (kg/m2) | Sex (M/F) |
| Infection | |||||
| Early infection | 31 (12.55%) | 1 (0, 3) | 65.77 ± 8.09 | 29.45 ± 5.29 | 15/16 |
| Chronic infection | 84 (34.01%) | 18 (3, 146) | 65.67 ± 8.29 | 30.13 ± 5.74 | 27/57 |
| Aseptic loosening | 79 (31.98%) | 68 (3, 189) | 61.41 ± 8.89 | 29.86 ± 5.80 | 14/65 |
| Periprosthetic fracture | 11 (4.45%) | 24 (0, 147) | 63.09 ± 10.88 | 29.53 ± 4.47 | 11/0 |
| Ligament instability | 10 (4.05%) | 29.5 (0, 165) | 66.50 ± 9.65 | 29.69 ± 5.89 | 2/8 |
| Implant wear | 9 (3.64%) | 63 (10, 161) | 66.00 ± 7.78 | 30.12 ± 6.21 | 2/7 |
| ROM limitation | 8 (3.24%) | 28 (16, 98) | 61.63 ± 4.41 | 32.44 ± 6.94 | 1/7 |
| Prosthetic dislocation | 7 (2.83%) | 28 (1, 56) | 68.43 ± 9.62 | 28.80 ± 4.33 | 2/5 |
| Pain without signs of loosening | 6 (2.43%) | 29 (8, 84) | 68.17 ± 7.88 | 28.97 ± 3.12 | 1/5 |
| Broken implant | 2 (0.81%) | 102.5 (80, 125) | 53.00 ± 9.90 | 26.30 ± 2.40 | 1/1 |